package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

public class IODemo8 {
    public static void main(String[] args) throws FileNotFoundException {
    try (InputStream inputStream = new FileInputStream("./test.txt")){
        while (true) {
            byte[] buffer = new byte[1024];
            int n = inputStream.read(buffer);
            if (n == -1){
                break;
            }
            String s = new String(buffer,0,n);//只取有效值
            System.out.println(s);
        }
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    }
}
